mirror of https://github.com/aclindsa/moneygo.git
60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
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package main
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import (
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"context"
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"github.com/yuin/gopher-lua"
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"net/http"
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"time"
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)
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//type and value to store user in lua's Context
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type key int
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const userContextKey key = 0
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const luaTimeoutSeconds uint = 5 // maximum time a lua request can run for
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func ReportHandler(w http.ResponseWriter, r *http.Request) {
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user, err := GetUserFromSession(r)
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if err != nil {
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WriteError(w, 1 /*Not Signed In*/)
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return
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}
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if r.Method == "GET" {
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// Create a new LState without opening the default libs for security
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L := lua.NewState(lua.Options{SkipOpenLibs: true})
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defer L.Close()
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// Create a new context holding the current user with a timeout
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ctx := context.WithValue(context.Background(), userContextKey, user)
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ctx, cancel := context.WithTimeout(ctx, luaTimeoutSeconds*time.Second)
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defer cancel()
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L.SetContext(ctx)
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for _, pair := range []struct {
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n string
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f lua.LGFunction
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}{
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{lua.LoadLibName, lua.OpenPackage}, // Must be first
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{lua.BaseLibName, lua.OpenBase},
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{lua.TabLibName, lua.OpenTable},
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{lua.StringLibName, lua.OpenString},
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{lua.MathLibName, lua.OpenMath},
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} {
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if err := L.CallByParam(lua.P{
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Fn: L.NewFunction(pair.f),
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NRet: 0,
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Protect: true,
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}, lua.LString(pair.n)); err != nil {
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panic(err)
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}
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}
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err := L.DoString(`print("Hello World")`)
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if err != nil {
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panic(err)
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}
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}
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}
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